An unglossed root in The Etymologies of the 1930s with derivatives like ᴹQ. panda “enclosure” and N. pann “courtyard” (Ety/PAD), so perhaps meaning “✱enclosure”.
Middle Primitive Elvish
os
root. round, about
goss
masculine name. Osse
ot/otos/otok
root. seven
pad
root. *enclosure
thel(es)
root. sister
Tolkien gave this root in The Etymologies of the 1930s as ᴹ√THEL and extended form ᴹ√THELES with the gloss “sister” and derivatives like ᴹQ. seler and N. thêl of the same meaning, both derived from the extended root as made clear by the Noldorin plural thelei < ON. thelehi (Ety/THEL). Hints of the roots continued use appear in the 1959 term Q. meletheldi “love-sisters” for close female friends (NM/20). In notes from the late 1960s, Tolkien gave Q. nésa and S. nethel as the words for “sister”, both from the root √NETH. Nevertheless, I think it is worth retaining ᴹ√THEL(ES) to represent more abstract notions of “sisterhood” for the purposes of Neo-Eldarin, for “metaphorical sister”s as opposed to Q. nésa/S. nethel for sisters by blood.
tor
root. brother
Tolkien gave this root in The Etymologies of the 1930s as ᴹ√TOR “brother” with derivatives like ᴹQ. toron and N. tôr of the same meaning (Ety/TOR). Hints of the roots continued use appear in the 1959 term Q. melotorni “love-brothers” for close male friends (NM/20). In notes from the late 1960s, Tolkien gave Q. háno and S. hanar as the words for “brother”, both from the root √KHAN. Nevertheless, I think it is worth retaining ᴹ√TOR to represent more abstract notions of “brotherhood” for the purposes of Neo-Eldarin, for “metaphorical” brothers as opposed to Q. háno/S. hanar for brothers by blood.
kiris
root. cut
kor
root. round
phal
root. foam
us(u)kwē
noun. reek
oth
root. fort
rista-
verb. cut
A root in The Etymologies of the 1930s glossed “round, about”, with various derivatives like N. o “about, concerning” and ᴹQ. osto/N. ost “city, town with wall round” (Ety/OS). Tolkien also considered variant forms ᴹ√OD and ᴹ√OTH, the latter glossed “fort” (EtyAC/OS). This root in The Etymologies is a later iteration of unglossed ᴱ√OSO [’OSO] from the Qenya Lexicon of the 1910s with derivatives like ᴱQ. ossa “wall and moat” and ᴱQ. ostar “township” (QL/71). It also had derivatives in the contemporaneous Gnomish Lexicon such as G. ost “enclosure, yard; town” and G. osta- “to surround with walls, build up; fortify, protect” (GL/63). This early root probably meant something like “✱enclosure”.
In the Quendi and Eldar essay from 1959-60, Q. osto and S. ost were instead derived from the root √SOT “shelter, protect, defend”, but this root has no other derivatives.
Neo-Eldarin: For purposes of Neo-Eldarin, ᴹ√OS “round, about” is too useful to discard, and I prefer it over the later root √SOT, though √(O)S-OT might be salvaged as an extension of √OS.